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Conference Paper: Rate loss caused by limited feedback and channel delay in coordinated multi-point system
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TitleRate loss caused by limited feedback and channel delay in coordinated multi-point system
 
AuthorsShi, J2
Zhang, T2
Zhou, Y1
Zeng, Z2
Huang, Z2
 
KeywordsBlock Diagonalization
Channel Delay
Comp
Limited Feedback
 
Issue Date2011
 
CitationIeee Vehicular Technology Conference, 2011 [How to Cite?]
DOI: http://dx.doi.org/10.1109/VETECS.2011.5956610
 
AbstractThis paper investigates the performance of clustered base station (BS) coordination with limited feedback and channel state information (CSI) delay. Given imperfect CSI caused by the limited feedback and channel delay, the expression of data rate per cell is derived. Moreover, compared to the rate with perfect CSI, a rate loss upper bound is obtained. A optimal feedback bits expression are derived to minimize the rate loss caused by limited feedback and channel delay. The numerical results show that the rate loss reduces when the number of feedback bits increases and the channel delay decreases. Meanwhile, the rate loss value reaches to a fixed value when feedback bits increase gradually. On the other hand, when the channel delay increases gradually, the rate loss can be improved little by the increasing of feedback bits. Lastly, as SNR increases, the system performance with the imperfect CSI improves more slowly than that with the perfect CSI. © 2011 IEEE.
 
ISSN1550-2252
 
DOIhttp://dx.doi.org/10.1109/VETECS.2011.5956610
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorShi, J
 
dc.contributor.authorZhang, T
 
dc.contributor.authorZhou, Y
 
dc.contributor.authorZeng, Z
 
dc.contributor.authorHuang, Z
 
dc.date.accessioned2012-08-08T08:34:38Z
 
dc.date.available2012-08-08T08:34:38Z
 
dc.date.issued2011
 
dc.description.abstractThis paper investigates the performance of clustered base station (BS) coordination with limited feedback and channel state information (CSI) delay. Given imperfect CSI caused by the limited feedback and channel delay, the expression of data rate per cell is derived. Moreover, compared to the rate with perfect CSI, a rate loss upper bound is obtained. A optimal feedback bits expression are derived to minimize the rate loss caused by limited feedback and channel delay. The numerical results show that the rate loss reduces when the number of feedback bits increases and the channel delay decreases. Meanwhile, the rate loss value reaches to a fixed value when feedback bits increase gradually. On the other hand, when the channel delay increases gradually, the rate loss can be improved little by the increasing of feedback bits. Lastly, as SNR increases, the system performance with the imperfect CSI improves more slowly than that with the perfect CSI. © 2011 IEEE.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationIeee Vehicular Technology Conference, 2011 [How to Cite?]
DOI: http://dx.doi.org/10.1109/VETECS.2011.5956610
 
dc.identifier.doihttp://dx.doi.org/10.1109/VETECS.2011.5956610
 
dc.identifier.issn1550-2252
 
dc.identifier.scopuseid_2-s2.0-80051965113
 
dc.identifier.urihttp://hdl.handle.net/10722/155644
 
dc.languageeng
 
dc.publisher.placeUnited States
 
dc.relation.ispartofIEEE Vehicular Technology Conference
 
dc.relation.referencesReferences in Scopus
 
dc.subjectBlock Diagonalization
 
dc.subjectChannel Delay
 
dc.subjectComp
 
dc.subjectLimited Feedback
 
dc.titleRate loss caused by limited feedback and channel delay in coordinated multi-point system
 
dc.typeConference_Paper
 
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<description.abstract>This paper investigates the performance of clustered base station (BS) coordination with limited feedback and channel state information (CSI) delay. Given imperfect CSI caused by the limited feedback and channel delay, the expression of data rate per cell is derived. Moreover, compared to the rate with perfect CSI, a rate loss upper bound is obtained. A optimal feedback bits expression are derived to minimize the rate loss caused by limited feedback and channel delay. The numerical results show that the rate loss reduces when the number of feedback bits increases and the channel delay decreases. Meanwhile, the rate loss value reaches to a fixed value when feedback bits increase gradually. On the other hand, when the channel delay increases gradually, the rate loss can be improved little by the increasing of feedback bits. Lastly, as SNR increases, the system performance with the imperfect CSI improves more slowly than that with the perfect CSI. &#169; 2011 IEEE.</description.abstract>
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<subject>Block Diagonalization</subject>
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Author Affiliations
  1. Institute of Computing Technology Chinese Academy of Sciences
  2. Beijing University of Posts and Telecommunications